add png content-type headers (#169)

swagger.go

@@ -99,6 +99,8 @@ func CustomWrapHandler(config *Config, handler *webdav.Handler) gin.HandlerFunc
 			c.Header("Content-Type", "text/css; charset=utf-8")
 		case ".js":
 			c.Header("Content-Type", "application/javascript")
+		case ".png":
+			c.Header("Content-Type", "image/png")
 		case ".json":
 			c.Header("Content-Type", "application/json; charset=utf-8")
 		}

swagger_test.go

@@ -3,7 +3,6 @@ package ginSwagger
 import (
 	"net/http/httptest"
 	"os"
-	"path/filepath"
 	"testing"
 
 	"github.com/gin-contrib/gzip"
@@ -39,6 +38,7 @@ func TestWrapCustomHandler(t *testing.T) {
 
 	w1 := performRequest("GET", "/index.html", router)
 	assert.Equal(t, 200, w1.Code)
+	assert.Equal(t, w1.Header()["Content-Type"][0], "text/html; charset=utf-8")
 
 	w2 := performRequest("GET", "/doc.json", router)
 	assert.Equal(t, 500, w2.Code)
@@ -50,9 +50,18 @@ func TestWrapCustomHandler(t *testing.T) {
 
 	w3 := performRequest("GET", "/favicon-16x16.png", router)
 	assert.Equal(t, 200, w3.Code)
+	assert.Equal(t, w3.Header()["Content-Type"][0], "image/png")
 
-	w4 := performRequest("GET", "/notfound", router)
-	assert.Equal(t, 404, w4.Code)
+	w4 := performRequest("GET", "/swagger-ui.css", router)
+	assert.Equal(t, 200, w4.Code)
+	assert.Equal(t, w4.Header()["Content-Type"][0], "text/css; charset=utf-8")
+
+	w5 := performRequest("GET", "/swagger-ui-bundle.js", router)
+	assert.Equal(t, 200, w5.Code)
+	assert.Equal(t, w5.Header()["Content-Type"][0], "application/javascript")
+
+	w6 := performRequest("GET", "/notfound", router)
+	assert.Equal(t, 404, w6.Code)
 }
 
 func TestDisablingWrapHandler(t *testing.T) {
@@ -200,7 +209,3 @@ func TestDefaultModelsExpandDepth(t *testing.T) {
 	configFunc(&cfg)
 	assert.Equal(t, expected, cfg.DefaultModelsExpandDepth)
 }
-
-func TestDeepLinking2(t *testing.T) {
-	t.Logf("extension: %s", filepath.Ext("/asas/index.html"))
-}